Year current US$ 2009 47267048 2010 63081914 2011 40532795 2012 77582603 2013 91781820 2014 140224619 2015 495095302 2016 7388348 2017 18315636 2018 41631440 2019 85424677 2020 190326678 2021 195947207 2022 76499040